<template>
	<view class="container" :style="appThemeStyle">
	  <mescroll-body ref="mescrollRef" :sticky="true" @init="mescrollInit" :down="{ native: true }" @down="downCallback" :up="upOption"
	    @up="upCallback">
		<!-- tab栏 -->
		<u-tabs :list="tabs" :is-scroll="false" v-model="curTab" :active-color="appTheme.mainBg" :duration="0.2" @change="onChangeTab" />
	    <!-- 订单列表 -->
	    <view class="order-list">
	      <view class="order-item" v-for="(item, index) in list.data" :key="index">
	        <view class="item-top">
	          <view class="item-top-left">
	            <text class="order-time">{{ item.create_time }}</text>
	          </view>
	          <view class="item-top-right">
	            <text class="state-text">{{ item.state_text }}</text>
	          </view>
	        </view>
	        <!-- 商品列表 -->
	        <view class="goods-list">
	          <view class="goods-item" v-for="(goods, idx) in item.goods" :key="idx">
	            <!-- 商品图片 -->
	            <view class="goods-image">
	              <image class="image" :src="goods.goods_image" mode="scaleToFill"></image>
	            </view>
	            <!-- 商品信息 -->
	            <view class="goods-content">
	              <view class="goods-title"><text class="twoline-hide">{{ goods.goods_name }}</text></view>
	              <view class="goods-props clearfix">
	                <view class="goods-props-item" v-for="(props, idx) in goods.goods_props" :key="idx">
	                  <text>{{ props.value.name }}</text>
	                </view>
	              </view>
	            </view>
	            <!-- 交易信息 -->
	            <view class="goods-trade">
	              <view class="goods-price">
	                <text class="unit">￥</text>
	                <text class="value">{{ goods.is_user_grade ? goods.grade_goods_price : goods.goods_price }}12.00</text>
	              </view>
	              <view class="goods-num">
	                <text>×{{ goods.total_num }}</text>
	              </view>
	            </view>
	          </view>
	        </view>
	        <!-- 订单合计 -->
	        <view class="order-total">
	          <text>共{{ item.total_num }}件商品，总金额</text>
	          <text class="unit">￥</text>
	          <text class="money">{{ item.pay_price }}</text>
	        </view>
	      </view>
	    </view>
	  </mescroll-body>
	</view>
</template>

<script>
	 import MescrollMixin from '@/uni_modules/mescroll-uni/components/mescroll-uni/mescroll-mixins'
	 import { getEmptyPaginateObj, getMoreListData } from '@/core/app'
	 import * as OrderApi from '@/api/order'
	 // 每页记录数量
	 const pageSize = 15
	 // tab栏数据
	 const tabs = [{
	   name: `全部`,
	   value: 'all'
	 }, {
	   name: `待支付`,
	   value: 'payment'
	 }, {
	   name: `待发货`,
	   value: 'delivery'
	 }, {
	   name: `待收货`,
	   value: 'received'
	 }, {
	   name: `待评价`,
	   value: 'comment'
	 }]
	 export default {
	    mixins: [MescrollMixin],
	    data() {
			return {
				// 当前页面参数
				options: { dataType: 'all' },
				// tab栏数据
				tabs,
				// 当前标签索引
				curTab: 0,
				// 订单列表数据
				list: getEmptyPaginateObj(),
				 
				// 上拉加载配置
				upOption: {
				   // 首次自动执行
				   auto: true,
				   // 每页数据的数量; 默认10
				   page: { size: pageSize },
				   // 数量要大于4条才显示无更多数据
				   noMoreSize: 4,
				   // 空布局
				   empty: {
				     tip: '亲，暂无订单记录'
				   }
				},
				canReset: false
			}
	    },
		/**
		 * 生命周期函数--监听页面显示
		 */
		onLoad(options) {
			// 初始化当前选中的标签
			this.initCurTab(options)
			// 注册全局事件订阅: 是否刷新订单列表
			uni.$on('syncRefresh3', canReset => {
			  this.canReset = canReset
			})
		},
		
		/**
		 * 生命周期函数--监听页面显示
		 */
		onShow() {
		  this.canReset && this.onRefreshList()
		  this.canReset = false
		},
		
		/**
		 * 生命周期函数--监听页面的卸载
		 */
		onUnload() {
		  // 卸载全局事件订阅
		  uni.$off('syncRefresh3')
		},
		methods: {
			// 初始化当前选中的标签
			initCurTab(options) {
			  const app = this
			  if (options.dataType) {
			    const index = app.tabs.findIndex(item => item.value == options.dataType)
			    app.curTab = index > -1 ? index : 0
			  }
			},
			/**
			 * 上拉加载的回调 (页面初始化时也会执行一次)
			 * 其中page.num:当前页 从1开始, page.size:每页数据条数,默认10
			 * @param {Object} page
			 */
			upCallback(page) {
				console.log(page,'page')
			  const app = this
			  // 设置列表数据
			  app.getOrderList(page.num)
			    .then(list => {
			      const curPageLen = list.data.length
			      const totalSize = list.data.total
			      app.mescroll.endBySize(curPageLen, totalSize)
			    })
			    .catch(() => app.mescroll.endErr())
			},
			
			// 获取订单列表
			getOrderList(pageNo = 1) {
			  const app = this
			  return new Promise((resolve, reject) => {
			    OrderApi.list({ dataType: app.getTabValue(), merchant: 1, page: pageNo }, { load: false })
			      .then(result => {
			        // 合并新数据
			        const newList = app.initList(result.data.list)
			        app.list.data = getMoreListData(newList, app.list, pageNo)
			        resolve(newList)
			      })
			  })
			},
			// 获取当前标签项的值
			getTabValue() {
			  return this.tabs[this.curTab].value
			},
			// 初始化订单列表数据
			initList(newList) {
			  newList.data.forEach(item => {
			    item.total_num = 0
			    item.goods.forEach(goods => {
			      item.total_num += goods.total_num
			    })
			  })
			  return newList
			},
			// 切换标签项
			onChangeTab(index) {
			  const app = this
			  // 设置当前选中的标签
			  app.curTab = index
			  // 刷新订单列表
			  app.onRefreshList()
			},
			// 刷新订单列表
			onRefreshList() {
			  this.list = getEmptyPaginateObj()
			  setTimeout(() => {
			    this.mescroll.resetUpScroll()
			  }, 120)
			},
		}
	}
</script>

<style lang="scss" scoped>
  // 项目内容
  .order-item {
    margin: 20rpx auto 20rpx auto;
    padding: 30rpx 30rpx;
    width: 94%;
    box-shadow: 0 1rpx 5rpx 0px rgba(0, 0, 0, 0.05);
    border-radius: 16rpx;
    background: #fff;
  }

  // 项目顶部
  .item-top {
    display: flex;
    justify-content: space-between;
    font-size: 26rpx;
    margin-bottom: 40rpx;

    .order-time {
      color: #777;
    }

    .state-text {
      color: $main-bg;
    }
  }

  // 商品列表
  .goods-list {

    // 商品项
    .goods-item {
      display: flex;
      margin-bottom: 40rpx;

      // 商品图片
      .goods-image {
        width: 180rpx;
        height: 180rpx;

        .image {
          display: block;
          width: 100%;
          height: 100%;
          border-radius: 8rpx;
        }
      }

      // 商品内容
      .goods-content {
        flex: 1;
        padding-left: 16rpx;
        padding-top: 16rpx;

        .goods-title {
          font-size: 26rpx;
          max-height: 76rpx;
        }

      .goods-props {
        margin-top: 14rpx;
        color: #ababab;
        font-size: 24rpx;
        overflow: hidden;

        .goods-props-item {
          padding: 4rpx 16rpx;
          border-radius: 12rpx;
          background-color: #fcfcfc;
        }
      }


      }

      // 交易信息
      .goods-trade {
        padding-top: 16rpx;
        width: 150rpx;
        text-align: right;
        color: $uni-text-color-grey;
        font-size: 26rpx;

        .goods-price {
          vertical-align: bottom;
          margin-bottom: 16rpx;

          .unit {
            margin-right: -2rpx;
            font-size: 24rpx;
          }
        }
      }

    }

  }

  // 订单合计
  .order-total {
    font-size: 26rpx;
    vertical-align: bottom;
    text-align: right;
    height: 40rpx;
    margin-bottom: 30rpx;

    .unit {
      margin-left: 8rpx;
      margin-right: -2rpx;
      font-size: 26rpx;
    }

    .money {
      font-size: 28rpx;
    }
  }

  // 订单操作
  .order-handle {
    .btn-group {

      .btn-item {
        border-radius: 10rpx;
        padding: 8rpx 20rpx;
        margin-left: 15rpx;
        font-size: 26rpx;
        float: right;
        color: #383838;
        border: 1rpx solid #a8a8a8;

        &:last-child {
          margin-left: 0;
        }

        &.active {
          color: $main-bg;
          border: 1rpx solid $main-bg;
        }
      }

    }

  }

</style>
